# Alerts API Error Codes
source: https://developer.mastercard.com/riskrecon-api/documentation/code-and-formats/rrecon-srv-error-cds/alerts-err-cds/index.md

### 4xx - Alerts API Error Codes {#4xx---alerts-api-error-codes}

| Sr.No. | Reason Code |                 Description                  |                                                                                      Resolution Tip                                                                                       |
|--------|-------------|----------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 1      | BAD_REQUEST | page: is invalid                             | Specify the correct value and try again. Refer to the [API YAML Specification](https://developer.mastercard.com/riskrecon-api/documentation/api-reference/index.md) for more information. |
| 2      | BAD_REQUEST | page: must be greater than 1                 | Specify the correct value and try again. Refer to the [API YAML Specification](https://developer.mastercard.com/riskrecon-api/documentation/api-reference/index.md) for more information. |
| 3      | BAD_REQUEST | per_page: is invalid                         | Specify the correct value and try again. Refer to the [API YAML Specification](https://developer.mastercard.com/riskrecon-api/documentation/api-reference/index.md) for more information. |
| 4      | BAD_REQUEST | per_page: must be greater than 1             | Specify the correct value and try again. Refer to the [API YAML Specification](https://developer.mastercard.com/riskrecon-api/documentation/api-reference/index.md) for more information. |
| 5      | BAD_REQUEST | per_page: must be less than or equal to 20   | Specify the correct value and try again. Refer to the [API YAML Specification](https://developer.mastercard.com/riskrecon-api/documentation/api-reference/index.md) for more information. |
| 6      | BAD_REQUEST | sort_attribute: is invalid                   | Specify the correct value and try again. Refer to the [API YAML Specification](https://developer.mastercard.com/riskrecon-api/documentation/api-reference/index.md) for more information. |
| 7      | BAD_REQUEST | sort_method: is invalid                      | Specify the correct value and try again. Refer to the [API YAML Specification](https://developer.mastercard.com/riskrecon-api/documentation/api-reference/index.md) for more information. |
| 8      | BAD_REQUEST | start_date: is invalid                       | Specify the correct value and try again. Refer to the [API YAML Specification](https://developer.mastercard.com/riskrecon-api/documentation/api-reference/index.md) for more information. |
| 9      | BAD_REQUEST | end_date: is invalid                         | Specify the correct value and try again. Refer to the [API YAML Specification](https://developer.mastercard.com/riskrecon-api/documentation/api-reference/index.md) for more information. |
| 10     | BAD_REQUEST | start_date: must not be greater than 30 days | Specify the correct value and try again. Refer to the [API YAML Specification](https://developer.mastercard.com/riskrecon-api/documentation/api-reference/index.md) for more information. |
| 11     | BAD_REQUEST | end_date: must not be greater than 30 days   | Specify the correct value and try again. Refer to the [API YAML Specification](https://developer.mastercard.com/riskrecon-api/documentation/api-reference/index.md) for more information. |
| 12     | BAD_REQUEST | priorities: is invalid                       | Specify the correct value and try again. Refer to the [API YAML Specification](https://developer.mastercard.com/riskrecon-api/documentation/api-reference/index.md) for more information. |